Question

Using suitable identify find (x + y + z )² - (x - y - z)²

Answer 1

Answer:

4x(y+z)

Step-by-step explanation:

(x+y+z)² - (x-y-z)²

=x² +y² +z² +2xy +2yz +2xz - (x² +y² + z² - 2xy + 2yz -2xz)

=x² +y² +z² +2xy +2yz +2xz - x² -y² - z² + 2xy - 2yz + 2xz

= 4xy + 4xz

= 4x(y+z)

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Answer 2

Step-by-step explanation:

(x+y+z)2= x2+y2+se+2ab+2bc+2ca